Cyclists with Shimano Di2 systems, this little converter is a game-changer for keeping your electronic shifting powered up! The rockible 4 pin to Type C converter is specifically designed for Di2 12 speed electronic shifting systems, making charging so much more convenient. Measuring just 2.3 x 2.1 x 1.5 cm, it's super compact and lightweight - you can literally toss it in your saddle bag or jersey pocket without even noticing it's there. Made from quality PP material, it's durable enough to handle life on the road. The package includes the charging adapter plus a handy lanyard, so you can attach it to your gear and never lose it. The installation is straightforward - just plug it into your Di2 system and connect your Type C cable. No more searching for that specific Di2 charging cable when your battery's running low mid-ride. The design is sleek and comes in multiple colors to match your bike's aesthetic. Whether you're a serious racer, weekend warrior, or just appreciate the smooth precision of electronic shifting, this adapter makes battery maintenance one less thing to worry about. It's one of those small accessories that makes a big difference in your cycling experience. If you've ever been caught with a dead Di2 battery miles from home, you know exactly why this converter is worth having in your kit!